Today's two-fer: merit badges!
The first two are the official Boy Scouts of America merit badges for Geology and Orienteering (i.e. using a compass) respectively.
There's also the brand-spanking-new-for-2011 merit badge for geocaching:
Popular Science article on Five Contests That Recognize The Science Achievements of the Everyman
And then there's the actual imitators:
Nerd Merit Badges that you can actually buy, but are in no way affiliated with the BSA (shown = the BoingBoing merit badge) They also have a collection of them specifically for Foursquare
And finally, the Fanboy Legion merit badges, also for sale:
I'm sure a quick internet search could find many. many more.